FKFinKit

Tools

Financial Calculators

Every calculator comes with detailed explanations, real-world examples, and further reading articles.

Mortgage Calculator | 按揭計算機

Mortgage Calculator

Monthly payment, stress test, and income requirements — instant results.

Calculate
Compound Interest Calculator | 複利計算機

Compound Interest Calculator

Visualise investment returns and the true power of compounding.

Calculate
MPF Calculator | MPF 計算機

MPF Calculator

Mandatory and voluntary MPF contribution comparison.

Calculate
Salaries Tax Calculator | 薪俸稅計算機

Salaries Tax Calculator

Automatic allowances and tax band calculation — essential for tax season.

Calculate
Rates Calculator | 差餉計算機

Rates Calculator

Calculate quarterly rates and government rent from rateable value.

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Personal Assessment Tax Calculator | 個人入息課稅計算機

Personal Assessment Calculator

Combine salary, business profits, and rental income for tax.

Calculate
Profits Tax Calculator | 利得稅計算機

Profits Tax Calculator

Estimate profits tax for sole prop, partnership, and limited company.

Calculate
Fixed Deposit Comparison | 定期存款比較

Fixed Deposit Comparison

Compare Hong Kong bank time deposit rates in real time.

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Retirement Savings Calculator | 退休儲蓄目標計算機

Retirement Savings Calculator

Set your retirement goal and calculate monthly savings needed.

Calculate
Dollar Cost Average Calculator | DCA 定期定額計算機

DCA Calculator

Simulate monthly stock/ETF investment returns.

Calculate
Rental Yield Calculator | 租金回報率計算機

Rental Yield Calculator

Calculate rental yield, cash flow, and ROI on property.

Calculate
Remortgage Calculator | 轉按計算機

Remortgage Calculator

Compare old vs new mortgage plans including rebates and penalties.

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Stock Total Return Calculator | 股票總回報計算機

Stock Total Return Calculator

Factor in dividends, reinvestment, and fees.

Calculate
Savings Goal Planner | 儲蓄規劃計算機

Savings Goal Planner

Set life goals — home, wedding, education — and calculate monthly savings needed.

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Stock Valuation Calculator | 股票估值計算機

Stock Valuation Calculator

PE/PB/DDM/Graham four-method valuation.

Calculate
IPO Valuation Calculator | IPO新股估值計算機

IPO Valuation Calculator

P/S ratio analysis to evaluate IPO pricing.

Calculate
TU Credit Score Self-Check | 信貸評分自測

TU Credit Score Estimator

6 questions to estimate your credit rating A–J.

Calculate
Credit Card Minimum Payment Calculator | 信用卡最低還款

Credit Card Min Pay Calculator

See the true cost of only paying the minimum.

Calculate
Currency Converter | 外幣匯率換算

Forex Converter

Live exchange rates for 17 major currencies.

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Precious Metals Investment Calculator | 貴金屬投資回報計算機

Precious Metals ROI Calculator

Calculate profit/loss on gold and silver investments.

Calculate
FIRE Financial Independence Calculator | FIRE 財務自由計算機

FIRE Financial Independence Calculator

4% rule — calculate your early retirement target.

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Insurance Needs Calculator | 保險需求估算機

Insurance Needs Estimator

Estimate life, CI, and medical insurance coverage.

Calculate
Buy vs Rent Calculator | 供樓vs租樓

Buy vs Rent Comparison

Analyse the long-term wealth impact of buying vs renting.

Calculate
Education Fund Calculator | 子女教育基金

Education Fund Calculator

Kindergarten to university — how much to save.

Calculate
Personal Finance Analysis | 個人理財分析

Personal Finance Analysis

Budget balance, assets vs liabilities, financial health score.

Calculate
Expense Tracker | 自動化記帳簿

Expense Tracker

Track daily spending with category breakdown and pie charts.

Calculate
Startup Cost Calculator | 創業成本計算機

Startup Cost Calculator

Estimate launch costs and monthly operating expenses.

Calculate

How to Use FinKit Tools

All FinKit calculators are free to use — no app download or account registration required. Simply open your browser, pick the tool you need, enter your numbers, and see instant results. Here are a few key things to know:

1. Instant Results, No Waiting

All calculations run in real time in your browser. Enter a number and see the result immediately — no need to click "Calculate" or wait for a server response.

2. Daily Auto-Updated Data

For tools that rely on market data (e.g., fixed deposit rates, forex rates, precious metals prices, mortgage rates), data is automatically updated daily from official sources to reflect the latest market conditions.

3. Every Tool Comes with a Guide

Each calculator links to an in-depth educational article. Not sure about the concept? Click through to learn the full financial concept from the ground up.

4. Privacy Protected

All numbers you enter stay in your browser and are never uploaded to any server. We don't collect, store, or share your personal financial data.

5. Continuously Updated

The FinKit team regularly updates all calculator parameters to reflect changes in Hong Kong regulations (e.g., tax band adjustments, MPF contribution cap revisions, mortgage policy changes), ensuring accurate results. We're also constantly launching new tools and articles.